Clamping tool for welding machining of automobile child seat

Abstract

The invention discloses a clamping tool for welding machining of an automobile child seat, and relates to the technical field of welding clamping tools. According to the clamping tool for welding machining of the automobile child seat, the bottom top block is matched with the arc top strip, the arc top strip makes contact with the bottoms of the staggered and stacked positions of the transverse steel plates and the longitudinal steel plates, the transverse steel plates and the longitudinal steel plates are clamped, the transverse steel plates and the longitudinal steel plates are clamped, and the transverse steel plates and the longitudinal steel plates are clamped. Under the driving acting force of the hydraulic cylinder, the contact pressure between the arc top strip and the bottom of the transverse steel plate is gradually increased, so that the positions, needing to be welded, of the transverse steel plate and the longitudinal steel plate which are crossed and stacked are tightly attached, and the situation that large gaps exist at the welding positions of the crossed and stacked steel plates, and insufficient welding occurs in the gaps in the welding process is avoided; and meanwhile, the inclined planes on the two sides of the bottom jacking block drive the arc jacking strip to make contact with the bottom of the steel plate, space is generated below the steel plate, and the situation that the bottom jacking block is attached to the steel plate and welded to the steel plate in the welding process is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding clamping fixture technology, specifically a clamping fixture for welding automotive child seats. Background Technology

[0002] Car child seats are designed specifically for children of different ages and weights, installed in vehicles to ensure their safety. The processing and welding of car child seats is the core process to ensure the strength and safety of the seat frame structure. It mainly targets the metal frame components. Welding is mainly used at the key connection points of the seat's metal frame to ensure the overall structural stability. The metal frame of the car child seat is the core load-bearing structure of the seat, which directly determines the seat's resistance to deformation and safety protection effect in a collision. The material of the metal frame must meet the requirements of strength, toughness and safety at the same time. Steel plates are often used in a cross-stacked manner. When clamping and fixing steel plates for car child seat frames in welding fixtures, gaps exist at the welding positions of the overlapping steel plates after fixing due to their cross-stacked nature. These gaps can easily lead to incomplete welding during the welding process, making it impossible to fix the steel plates together. At the same time, the steel plates can easily become fixed to the clamping fixture during the welding process, making it difficult to remove them. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clamping fixture for welding automotive child seats, comprising: The frame has slide rails fixedly installed on both sides of the top of the frame, and a support mechanism is installed on the top of the frame. The bottom of the support mechanism is slidably adapted to the top of the slide rail. A positioning mechanism and a top edge mechanism are provided, wherein the positioning mechanism is installed on top of the support mechanism and the top edge mechanism is installed inside the positioning mechanism; The top edge mechanism includes a hydraulic cylinder. The bottom of the hydraulic cylinder is fixedly connected to the top of the frame, and a base plate is fixedly installed at the output end of the hydraulic cylinder. A connecting frame is fixedly installed on the top of the base plate. The connecting frames are evenly installed on the top of the base plate, and a connecting plate is fixedly installed on the top of each connecting frame. A bottom-top block is fixedly installed on the top of each connecting plate. The bottom-top blocks are evenly installed on the top of each connecting plate, and inclined blocks are provided on both sides of the top of each bottom-top block, tilting towards the center. The bottom-top block cooperates with the arc-shaped top strip, and the arc-shaped top strip contacts the horizontal steel plate and the vertical steel plate. At the bottom of the staggered stacked steel plates, the contact pressure between the arc-shaped top strip and the bottom of the horizontal steel plate gradually increases under the driving force of the hydraulic cylinder. This ensures that the welding positions required for the cross-stacked horizontal and vertical steel plates are tightly fitted, avoiding large gaps at the weld joints of the cross-stacked steel plates. This would prevent incomplete welding due to gaps during the welding process. At the same time, the inclined surfaces on both sides of the bottom block, while driving the arc-shaped top strip to contact the bottom of the steel plate, create space below the steel plate, preventing it from touching the steel plate. This prevents it from welding together with the steel plate during the welding process. The top of the inclined block is fixedly installed with the arc-shaped top strip.

[0004] Preferably, the support mechanism includes a support plate, with slide bars on both sides of the bottom of the support plate. The support plate is slidably adapted to the top of the slide rail via the slide bars. Slide grooves are formed on both sides of the top of the support plate. Hollow slots are evenly formed on the top of the support plate, and the hollow slots are located between the slide grooves. An inner slide frame and an outer slide frame are slidably installed in the hollow slots of the support plate. The inner slide frame is located inside the outer slide frame. A first cylinder is fixedly installed on both sides of the bottom of the support plate. The outer sides of the inner slide frame and the outer slide frame are fixedly connected to the output end of the first cylinder.

[0005] Preferably, a feeding plate is fixedly installed on the top of the support plate. The feeding plate is evenly installed on the top of the support plate. Side pressure strips are fixedly installed on the top of both the outer and inner sliding frames. The side pressure strips are staggered on both sides of the feeding plate. The side of the side pressure strip closest to the feeding plate is inclined. Through the inclined surfaces on both sides of the top of the feeding plate, in conjunction with the rotating roller and the side pads, gaps are formed on both sides of the bottom of the steel plate when supporting the steel plate, preventing the bottom edge of the steel plate from contacting the feeding plate. During the welding process, welding fixation between the steel plate and the clamping fixture affects the smooth removal after welding. A top material block is fixedly installed on the inner wall of the side pressure strip. The top of the top material block is flat. The side pressure strip cooperates with the top material block to clamp the horizontally placed steel plate. During the clamping process, the inclined surface of the side pressure strip contacts the two sides of the top of the steel plate. As the side pressure strip approaches the steel plate, it clamps the steel plate with the inclined surface and presses the steel plate downward. At the same time, when the side pressure strip approaches the steel plate, it drives the top material block to enter under the steel plate and contact the bottom of the steel plate. When the side pressure strip clamps and fixes the steel plate with the inclined surface, it provides support at the bottom of the clamping position of the steel plate to prevent the steel plate from deforming and bending during clamping. The bottom of the top material block is inclined.

[0006] Preferably, both sides of the top of the feeding plate are inclined surfaces, and the top of the feeding plate is uniformly provided with plate grooves. The plate grooves of the feeding plate are slidably adapted to the outer side of the connecting plate, and the center of the top of the feeding plate is uniformly provided with roller grooves. Rotary rollers are rotatably installed in the roller grooves of the feeding plate. Through the cooperation of the rollers and side pads, the tops of the rollers and side pads contact the bottom of the steel plate. When the position of the steel plate is adjusted by clamping, the rotation of the rollers reduces the frictional resistance. At the same time, the tops of the side pads, rollers and top blocks are flush, ensuring that the top block smoothly enters the bottom of the steel plate during clamping, avoiding jamming during clamping, and preventing damage to the steel plate due to clamping pressure. Side pads are fixedly installed on both sides of the roller grooves of the feeding plate. The top of the roller is flush with the top of the top block. The inclined surface of the top block is adapted to the inclined surface of the feeding plate. The top of the side pads is flush with the top of the roller.

[0007] Preferably, the positioning mechanism includes a support bar that engages with a slot in a support plate. Both ends of the support bar have end blocks, the bottom of which is adapted to a sliding groove in the support plate. The top of the support bar has symmetrically formed inner rectangular grooves, which are slidably fitted into the connecting frame. Both sides of the support bar have protrusions, and a second cylinder is fixedly mounted on the bottom of each protrusion. The output end of the second cylinder passes through the protrusion and extends to the top. A top plate is fixedly mounted on the output end of the second cylinder. The bottom of the top plate... A groove is provided at the center of the top plate. The groove of the top plate cooperates with the inner pressure block. When fixing the longitudinally stacked steel plates, the top plate moves down and the inclined surface of the bottom of the inner pressure block contacts the two sides of the top of the steel plate. During the downward movement, the position of the stacked steel plates is adjusted to ensure that the steel plates are stacked vertically. Under pressure, the stacked steel plates are tightly fitted together, increasing friction and preventing slippage during welding. Inner pressure blocks are fixedly installed on both sides of the groove, and the bottom of the inner pressure blocks is inclined to both sides.

[0008] This invention provides a clamping fixture for welding automotive child seats. It offers the following advantages: (i) The clamping fixture for welding the child car seat uses a bottom top block and an arc top strip to contact the bottom of the cross-stacked position of the horizontal and vertical steel plates. Under the driving force of the hydraulic cylinder, the contact pressure between the arc top strip and the bottom of the horizontal steel plate gradually increases, so that the welding position of the cross-stacked horizontal and vertical steel plates is tightly fitted, avoiding large gaps at the welding point of the cross-stacked steel plates, which would cause incomplete welding during the welding process. At the same time, the inclined surfaces on both sides of the bottom top block, while driving the arc top strip to contact the bottom of the steel plate, create space under the steel plate, preventing it from touching the steel plate and thus welding together with the steel plate during the welding process.

[0009] (ii) The clamping fixture for welding the child car seat uses the inclined surfaces on both sides of the top of the feeding plate, along with the rotating rollers and side pads, to support the steel plate. The inclined surfaces create gaps on both sides of the bottom of the steel plate, preventing the bottom edge of the steel plate from contacting the feeding plate. During the welding process, the steel plate is welded and fixed to the clamping fixture, which affects the smooth removal after welding.

[0010] (III) The clamping fixture for welding and processing the car child seat, through the cooperation of the side pressure strip and the top material block, during the process of clamping the horizontally placed steel plate, the inclined surface of the side pressure strip contacts the two sides of the top of the steel plate. As the side pressure strip approaches the steel plate, it clamps the steel plate through the inclined surface and presses the steel plate downward. At the same time, when the side pressure strip approaches the steel plate, it drives the top material block to enter the bottom of the steel plate and contact the bottom of the steel plate. When the side pressure strip clamps and fixes the steel plate through the inclined surface, it provides support at the bottom of the clamping position of the steel plate to prevent the steel plate from deforming and bending during clamping.

[0011] (iv) The clamping fixture for welding and processing the car child seat uses a rotating roller and a side pad to cooperate. The top of the rotating roller and the side pad contact the bottom of the steel plate. When the position of the steel plate is adjusted, the rotation of the rotating roller reduces the frictional resistance. At the same time, the tops of the side pad, the rotating roller and the top material block are flush, which ensures that the top material block can smoothly enter the bottom of the steel plate during clamping, avoiding jamming during clamping and causing damage to the steel plate under clamping pressure.

[0012] (v) The clamping fixture for welding the child car seat uses the groove of the top plate to cooperate with the inner pressure block. When fixing the longitudinally stacked steel plates, the top plate moves down and the inclined surface at the bottom of the inner pressure block contacts the two sides of the top of the steel plate. During the downward movement, the position of the stacked steel plates is adjusted to ensure that the steel plates are stacked vertically and crosswise. Under pressure, the cross steel plates are tightly fitted together, increasing the friction and preventing slippage during welding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positional structure of the support mechanism, positioning mechanism, and top edge mechanism of the present invention; Figure 3 This is a schematic diagram of the support mechanism of the present invention; Figure 4 This is a bottom view of the support mechanism of the present invention; Figure 5 This is a partial structural schematic diagram of the support mechanism of the present invention; Figure 6 This is a schematic diagram showing the positional structure of the positioning mechanism and the top edge mechanism of the present invention; Figure 7 This is a schematic diagram of the positioning mechanism of the present invention; Figure 8 This is a partial structural schematic diagram of the positioning mechanism of the present invention; Figure 9 This is a schematic diagram of the top edge mechanism of the present invention; Figure 10 This is a partial structural schematic diagram of the top edge mechanism of the present invention.

[0014] In the diagram: 1. Frame; 2. Support mechanism; 3. Positioning mechanism; 4. Top edge mechanism; 5. Slide rail; 21. Support plate; 22. Outer sliding frame; 23. Feeding plate; 24. Side pressure strip; 25. Top material block; 26. Inner sliding frame; 27. First cylinder; 28. Rotary roller; 29. ​​Side pad strip; 31. Support strip; 32. Top plate; 33. End block; 34. Second cylinder; 35. Inner rectangular groove; 36. Inner pressure block; 41. Hydraulic cylinder; 42. Base plate; 43. Connecting frame; 44. Connecting plate; 45. Bottom top block; 46. Arc top strip. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] For the first embodiment, please refer to... Figures 1 to 2 and Figures 9 to 10 The present invention provides a technical solution: A clamping fixture for welding car child seats includes: The frame 1 has slide rails 5 fixedly installed on both sides of the top of the frame 1, and a support mechanism 2 is installed on the top of the frame 1. The bottom of the support mechanism 2 is slidably adapted to the top of the slide rail 5. Positioning mechanism 3 and top edge mechanism 4 are installed on top of support mechanism 2, and top edge mechanism 4 is installed inside positioning mechanism 3. The top edge mechanism 4 includes a hydraulic cylinder 41. The bottom of the hydraulic cylinder 41 is fixedly connected to the top of the frame 1, and a base plate 42 is fixedly installed at the output end of the hydraulic cylinder 41. A connecting frame 43 is fixedly installed on the top of the base plate 42. The connecting frames 43 are evenly installed on the top of the base plate 42, and a connecting plate 44 is fixedly installed on the top of each connecting frame 43. A bottom block 45 is fixedly installed on the top of the connecting plate 44. After the longitudinal and transverse steel plates are fixed, the hydraulic cylinder 41 drives the base plate 42 to move upward, causing the base plate 42 to drive the connecting frames 43 to slide at the inner rectangular groove 35 of the support bar 31. The connecting plate 44 is moved upward at the groove of the feeding plate 23, so that the bottom top block 45 contacts the bottom of the cross-attached position of the horizontal and vertical steel plates through the arc top strip 46. The bottom top block 45 is evenly installed on the top of the connecting plate 44. Under the driving force of the hydraulic cylinder 41, in conjunction with the support mechanism 2 to fix the horizontal steel plate, pressure is applied to the bottom of the horizontal steel plate, so that the edge position of the cross-stack of the horizontal and vertical steel plates is tightly attached to avoid gaps. The bottom top block 45 has inclined blocks on both sides of the top, which are inclined towards the center, and the top of the inclined blocks is fixedly installed with the arc top strip 46.

[0017] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 3 to 5 As shown, the support mechanism 2 includes a support plate 21. Slide bars are provided on both sides of the bottom of the support plate 21. The support plate 21 is slidably adapted to the top of the slide rail 5 through the slide bars. Slide grooves are provided on both sides of the top of the support plate 21. Hollow slots are evenly provided on the top of the support plate 21 and are located between the slide grooves. An inner slide frame 26 and an outer slide frame 22 are slidably installed in the hollow slots of the support plate 21. The inner slide frame 26 is located inside the outer slide frame 22. A first cylinder 27 is fixedly installed on both sides of the bottom of the support plate 21. The outer sides of the inner slide frame 26 and the outer slide frame 22 are fixedly connected to the output end of the first cylinder 27.

[0018] A feeding plate 23 is fixedly installed on the top of the support plate 21. The feeding plate 23 is evenly installed on the top of the support plate 21. Side pressure strips 24 are fixedly installed on the top of the outer sliding frame 22 and the inner sliding frame 26. The side pressure strips 24 are staggered on both sides of the feeding plate 23. The side of the side pressure strip 24 closest to the feeding plate 23 is inclined. The first cylinder 27 is activated, so that the first cylinders 27 on both sides drive the inner sliding frame 26 and the outer sliding frame 22 to move. This causes the side pressure strips 24 staggered on both sides of the feeding plate 23 to approach the feeding plate 23. The inclined surface of the side pressure strip 24 contacts the edge of the top of the steel plate. The inclined surface contacts the steel plate to clamp and fix the steel plate. At the same time, the inclined surface generates a downward pressure force on the steel plate. A top material block 25 is fixedly installed on the inner wall of the side pressure strip 24. The top of the top material block 25 is flat, and the bottom of the top material block 25 is inclined.

[0019] Both sides of the top of the feeding plate 23 are sloped, and the top of the feeding plate 23 is evenly provided with plate grooves. The plate grooves of the feeding plate 23 slide and adapt to the outer side of the connecting plate 44. During welding, the horizontally placed steel plate is placed on the top of the feeding plate 23, so that the bottom of the steel plate contacts the top of the rotating roller 28 and the side pad 29. The rotating roller 28 and the side pad 29 cooperate to support the steel plate. The center of the top of the feeding plate 23 is evenly provided with roller grooves, and rotating rollers 2 are rotatably installed in the roller grooves of the feeding plate 23. 8. Side pads 29 are fixedly installed on both sides of the roller groove of the feeding plate 23. The top of the rotating roller 28 is flush with the top of the top block 25. When the side pressure strip 24 clamps the steel plate, it drives the top block 25 to approach the feeding plate 23. The flat surface of the top of the top block 25 contacts the bottom of the steel plate. With the pressure of the side pressure strip 24 on the steel plate, it provides support at the bottom of the pressure position. The inclined surface of the top block 25 is adapted to the inclined surface of the feeding plate 23. The top of the side pad 29 is flush with the top of the rotating roller 28.

[0020] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 6 to 8 As shown, the positioning mechanism 3 includes a support bar 31, which is snapped into the slot of the support plate 21. Both ends of the support bar 31 are provided with end blocks 33, the bottom of which is adapted to the sliding groove of the support plate 21. The top of the support bar 31 is symmetrically provided with inner rectangular grooves 35, and the connecting frame 43 is slidably adapted to the inner rectangular grooves 35. After fixing the horizontal steel plate, the vertical steel plate is placed on top of the horizontal steel plate, positioning it below the top plate 32. Then, the second cylinder 34 is activated, causing the top plate 32 to move downwards, so that the symmetrically arranged inner pressure blocks 36 at the bottom groove of the top plate 32 contact the two sides of the top of the steel plate. Both sides of 31 are provided with protrusions, and the bottom of each protrusion is fixedly installed with a second cylinder 34. The output end of the second cylinder 34 passes through the protrusion and extends to the top. The output end of the second cylinder 34 is fixedly installed with a top plate 32. A groove is opened at the center of the bottom of the top plate 32. Utilizing the characteristic that the bottom end of the inner pressure block 36 is inclined to both sides, the inclined surface of the inner pressure block 36 contacts the steel plate. During the movement, the position of the steel plate is adjusted, and the pressure force on the steel plate is gradually increased, so that the longitudinal steel plate and the transverse steel plate are cross-stacked and attached. The inner pressure block 36 is fixedly installed on both sides of the groove, and the bottom end of the inner pressure block 36 is inclined to both sides.

[0021] In use, the steel plates required for the child seat frame are placed crosswise into the clamping fixture. First, the horizontal steel plate is placed into the support mechanism 2, which positions and clamps the horizontal steel plate. Then, the vertical steel plate is placed on top of the horizontal steel plate, so that the steel plates cross each other and the vertical steel plate is inside the positioning mechanism 3. The positioning mechanism 3 presses the vertical steel plate to make the vertical steel plate fit with the horizontal steel plate. Finally, the top edge mechanism 4 lifts and applies pressure at the bottom of the intersection of the horizontal and vertical steel plates to make the intersection of the steel plates fit tightly together.

[0022] In the support mechanism 2, during welding, the horizontally placed steel plate is placed on top of the feeding plate 23, so that the bottom of the steel plate contacts the top of the rotating roller 28 and the side pad 29. The rotating roller 28 and the side pad 29 cooperate to support the steel plate. Then, the first cylinder 27 is activated, so that the first cylinders 27 on both sides drive the inner slide frame 26 and the outer slide frame 22 to move. The side pressure strips 24, which are staggered on both sides of the feeding plate 23, approach the feeding plate 23, so that the inclined surface of the side pressure strip 24 contacts the edge of the top of the steel plate. By using the inclined surface to contact the steel plate, the steel plate is clamped and fixed. At the same time, the inclined surface generates a downward pressure force on the steel plate. When the side pressure strip 24 clamps the steel plate, it drives the top material block 25 to approach the feeding plate 23. The flat surface of the top of the top material block 25 contacts the bottom of the steel plate. With the pressure of the side pressure strip 24, the bottom of the steel plate is supported at the pressure position.

[0023] In the positioning mechanism 3, after the horizontal steel plate is fixed, the vertical steel plate is placed on top of the horizontal steel plate and positioned below the top plate 32. Then, the second cylinder 34 is activated, causing the second cylinder 34 to move the top plate 32 downward, so that the inner pressure blocks 36 symmetrically arranged at the bottom groove of the top plate 32 contact the two sides of the top of the steel plate. Utilizing the characteristic that the bottom end of the inner pressure block 36 is inclined to both sides, the inclined surface of the inner pressure block 36 contacts the steel plate. During the movement, the position of the steel plate is adjusted, and the pressure force on the steel plate is gradually increased, so that the vertical steel plate and the horizontal steel plate are cross-stacked and bonded together.

[0024] After the longitudinal and transverse steel plates are fixed, the top edge mechanism 4 drives the bottom plate 42 to move upward through the hydraulic cylinder 41. This causes the bottom plate 42 to drive the connecting frame 43 to slide at the inner rectangular groove 35 of the support bar 31, and to drive the connecting plate 44 to move upward at the plate groove of the feeding plate 23. This causes the bottom top block 45 to contact the bottom of the cross-attached position of the transverse and longitudinal steel plates through the arc top bar 46. Under the driving force of the hydraulic cylinder 41, and in conjunction with the support mechanism 2 to fix the transverse steel plate, pressure is applied to the bottom of the transverse steel plate, so that the edges of the cross-stacked transverse and longitudinal steel plates are tightly attached to avoid gaps.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping fixture for welding car child seats, characterized in that, include: The frame (1) has slide rails (5) fixedly installed on both sides of the top of the frame (1), and a support mechanism (2) is installed on the top of the frame (1). The bottom of the support mechanism (2) is slidably adapted to the top of the slide rail (5). Positioning mechanism (3) and top edge mechanism (4), wherein the positioning mechanism (3) is installed on the top of the support mechanism (2) and the top edge mechanism (4) is installed inside the positioning mechanism (3); The top edge mechanism (4) includes a hydraulic cylinder (41). The bottom of the hydraulic cylinder (41) is fixedly connected to the top of the frame (1). A base plate (42) is fixedly installed at the output end of the hydraulic cylinder (41). A connecting frame (43) is fixedly installed at the top of the base plate (42). The connecting frames (43) are evenly installed on the top of the base plate (42). A connecting plate (44) is fixedly installed on the top of each connecting frame (43). A bottom top block (45) is fixedly installed on the top of the connecting plate (44). The bottom top block (45) is evenly installed on the top of the connecting plate (44). Inclined blocks that tilt towards the center are provided on both sides of the top of the bottom top block (45). An arc top strip (46) is fixedly installed on the top of the inclined block.

2. The clamping fixture for welding automotive child seats according to claim 1, characterized in that: The support mechanism (2) includes a support plate (21), and slide bars are provided on both sides of the bottom of the support plate (21). The support plate (21) is slidably adapted to the top of the slide rail (5) through the slide bars, and slide grooves are provided on both sides of the top of the support plate (21).

3. The clamping fixture for welding automotive child seats according to claim 2, characterized in that: The top of the support plate (21) is evenly provided with slots, and the slots are located between the sliding grooves. An inner sliding frame (26) and an outer sliding frame (22) are slidably installed in the slots of the support plate (21). The inner sliding frame (26) is located inside the outer sliding frame (22). A first cylinder (27) is fixedly installed on both sides of the bottom of the support plate (21). The outer sides of the inner sliding frame (26) and the outer sliding frame (22) are fixedly connected to the output end of the first cylinder (27).

4. The clamping fixture for welding automotive child seats according to claim 3, characterized in that: A feeding plate (23) is fixedly installed on the top of the support plate (21). The feeding plate (23) is evenly installed on the top of the support plate (21). Side pressure strips (24) are fixedly installed on the top of the outer slide frame (22) and the inner slide frame (26). The side pressure strips (24) are staggered on both sides of the feeding plate (23).

5. The clamping fixture for welding automotive child seats according to claim 4, characterized in that: The side pressure strip (24) is inclined on the side near the feeding plate (23), and a top material block (25) is fixedly installed on the inner wall of the side pressure strip (24). The top of the top material block (25) is flat, and the bottom of the top material block (25) is inclined.

6. The clamping fixture for welding automotive child seats according to claim 5, characterized in that: The top two sides of the feeding plate (23) are both inclined, and the top of the feeding plate (23) is evenly provided with a plate groove. The plate groove of the feeding plate (23) is slidably adapted to the outside of the connecting plate (44). The center position of the top of the feeding plate (23) is evenly provided with a roller groove. A rotating roller (28) is rotatably installed at the roller groove of the feeding plate (23). Side pads (29) are fixedly installed on both sides of the roller groove of the feeding plate (23).

7. The clamping fixture for welding automotive child seats according to claim 6, characterized in that: The top of the rotating roller (28) is flush with the top of the top material block (25), the inclined surface of the top material block (25) is adapted to the inclined surface of the feeding plate (23), and the top of the side pad strip (29) is flush with the top of the rotating roller (28).

8. The clamping fixture for welding automotive child seats according to claim 7, characterized in that: The positioning mechanism (3) includes a support bar (31), which is engaged in the slot of the support plate (21), and both ends of the support bar (31) are provided with end blocks (33), the bottom of the end blocks (33) being adapted to the sliding groove of the support plate (21).

9. The clamping fixture for welding automotive child seats according to claim 8, characterized in that: The top of the support bar (31) is symmetrically provided with inner rectangular grooves (35), the connecting frame (43) is slidably adapted to the inner rectangular grooves (35), both sides of the support bar (31) are provided with protrusions, and the bottom of the protrusions is fixedly installed with a second cylinder (34), the output end of the second cylinder (34) passes through the protrusion and extends to the top.

10. The clamping fixture for welding automotive child seats according to claim 9, characterized in that: The output end of the second cylinder (34) is fixedly mounted with a top plate (32). A groove is provided at the center of the bottom of the top plate (32), and an inner pressure block (36) is fixedly mounted on both sides of the groove. The bottom end of the inner pressure block (36) is inclined to both sides.

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